.main-header .nav-addtabs{ float: left; z-index: 98;height: 100%; border: none}
.nav-addtabs > li .close-tab {
    font-size: 10px;
    position: absolute;
    right: 10px;
    top: 50%;
    margin-top: -20px;
    z-index: 100;
    cursor: pointer;
    color: #eee;
    display: none;}
.nav-addtabs > li > a i{ margin-right: 3px;}
.nav-addtabs .dropdown-menu li{ position: relative}
.nav-tabs>li>a{ height: 50px; line-height: 50px; padding: 0px 15px;}
.nav-tabs>li>a:hover,.nav-tabs>li.active>a,.nav-tabs>li.active>a:hover{ border: 1px solid transparent}

.nav-addtabs > li:hover .close-tab{ display: block}
.nav-addtabs > li:hover .dropdown-menu .close-tab{display:none}
.nav-addtabs > li:hover .dropdown-menu li:hover .close-tab{display:block; margin-top: -10px;}
.sidebar-menu .active>.treeview-menu,.sidebar-menu .menu-open>.treeview-menu{display: block}